摘要:
A process for depositing magnetic toner material on electrostatic latent images formed on an image bearing surfaces includes the steps of conveying toner to the developing zone via a magnet roll having a shell and coaxial permanent magnet member rotating in the same directions. In the region of the developing zone, the toner is subjected to both an A.C. magnetic field and an applied A.C. electrical field so as to render the toner electroconductive. The A.C. electrical field has a peak voltage greater than the dark voltage of the latent image, but less than 3,200 volts, and a frequency greater than v/0.3 where v is the advancing speed of the image bearing surfaces in relation to the magnet roll.
摘要:
An image developing machine uses magnetic toner for developing a latent image on a light sensitive drum. The magnetic toner is fed onto a surface of a sleeve and applied onto the surface of the light sensitive drum at a developing station in a direction which is the reverse of the moving direction of the drum. Before being applied, the thickness of the toner on the sleeve is lessened twice by doctor blades so as to effectively avoid any occurrence of sticking between the toner particles or sticking thereof to the sleeve surface. Proper values have been found for the distance H between the drum surface and the sleeve surface and gaps L.sub.1 and L.sub.2 between leading ends of the doctor blades and the sleeve surface.
摘要:
A developing apparatus including a fixed permanent magnet member 4 having a plurality of magnetic poles on the surface and a non-magnetic cylindrical sleeve 5 which is rotated around the permanent magnet member 4 at a position opposing a movable image-bearing member 1 having an electrostatic latent image on the surface, to form a developing region Z; causing a developer 3 to be magnetically attracted onto a surface of the non-magnetic cylindrical sleeve 4, and rotating the non-magnetic cylindrical sleeve 4 to convey the developer 3 into the developing region Z, and developing the electrostatic latent image with the magnetic toner 3, the moving velocity of the developer 3 in the developing region Z being higher than the peripheral velocity of the non-magnetic cylindrical sleeve 5.
摘要:
A developing apparatus including a magnetic conveying means 4 comprising a non-magnetic metal sleeve 7, onto which a developer containing a magnetic toner and a magnetic carrier is attracted, a permanent magnet member 8 having a plurality of magnetic poles and stationary inside the sleeve 7; a casing 1a having a developer-containing portion 5 for receiving the magnetic conveying means 4 and a toner-containing portion 3 disposed adjacent to the developer-containing portion 5 for storing the magnetic toner; and a doctor blade 10 for regulating a thickness of the developer 11 on the sleeve 7, the sleeve 7 being rotated such that the magnetic toner is attracted onto a surface of an electrostatic image-bearing member 12, further comprising a downward partition 3a and an upward partition 3b between the developer-containing portion 5 and the toner-containing portion 3 in such a positional relation that the downward partition 3a is closer to the sleeve 7 than the upward partition 3b, a developer which has not passed through a gap between the doctor blade 10 and the sleeve 7 being mixed with a freshly supplied magnetic toner in a region R defined by the downward partition 3a, the upward partition 3b, the sleeve 7 and an inner wall of the casing 1a.
摘要:
The developing method of the present invention is carried out by providing a developing means comprising a non-magnetic sleeve and a permanent magnet member stationary inside the non-magnetic sleeve at a position opposing an image-bearing member having an electrostatic latent image on the surface, thereby forming a developing region; causing a developer to be magnetically attracted onto a surface of the non-magnetic sleeve, the developer comprising magnetic toner consisting of a binder resin and magnetic powder and capable of being charged at a particular polarity and a magnetic carrier having a relatively large conductivity; and rotating the non-magnetic sleeve to convey the developer to the developing region, thereby developing the electrostatic latent image with the magnetic toner. The non-magnetic sleeve is rotated in the same direction as the image-bearing member in the developing region at a ratio of a surface moving velocity (V.sub.1) of the non-magnetic sleeve to a surface moving velocity (V.sub.2) of the image-bearing member (V.sub.1 /V.sub.2)=1.5-5.0. A center of a developing magnetic pole of the permanent magnet member is deviated by 2.degree.-12.degree. toward the downstream side from a line connecting the closest points of the non-magnetic sleeve and the image-bearing member.
摘要:
A display device with a touch detection function includes: a plurality of liquid crystal display elements performing display operation; a plurality of touch detection electrodes arranged side by side to extend in one direction, and each outputting a detection signal based on a change in an electrostatic capacitance caused by an external proximity object; a conductive film insulated from or connected with high resistance to the touch detection electrodes, and disposed to cover the touch detection electrodes; and a touch detection circuit detecting the external proximity object by sampling the detection signal. The conductive film has a sheet resistance equal to or smaller than a predetermined resistance value, and has a time constant larger than a predetermined minimum time constant defined by sampling timings in the touch detection circuit.
摘要:
A display device includes: a display section having a plurality of pixel electrodes; and a plurality of drive electrodes extending in a first direction and arranged side-by-side in a second direction. Each of the drive electrodes has a width in the second direction corresponding to a size of the two or more pixel electrodes, and has one or more slits extending in the first direction.
摘要:
Disclosed herein is a contact detecting device including: a contact responding section configured to produce an electric change in response to an object to be detected coming into contact with or proximity to a detecting surface; and a contact driving scanning section configured to scan application of driving voltage to the contact responding section in one direction within the detecting surface, and control output of the electric change in time series, wherein the contact driving scanning section performs a plurality of scans of different regions of the contact responding section in parallel with each other, and outputs a plurality of the electric changes in parallel with each other.
摘要:
A display device includes: a plurality of drive electrodes; a plurality of detection electrodes intersecting the plurality of drive electrodes; and a scan driving unit performing a first scan drive and a second scan drive. The first scan drive allows a display drive signal for driving the display elements to be applied to each of the plurality of common drive electrodes, and the second scan drive allows a touch detection drive signal for detecting an external proximity object to be applied to each of the plurality of common drive electrodes.
摘要:
There are provided a display panel with a touch detection function and a method of driving the same, a drive circuit, as well as an electronic unit, which make it possible to reduce an influence of a disturbance noise. The display panel includes: a signal generation section selecting one pulse period from a plurality of pulse periods prepared beforehand, and generating a synchronization signal including a series of pulses appearing at the selected pulse period; a display section performing display based on the synchronization signal; and a touch detection section performing touch detection operation based on the synchronization signal.